diff --git a/polymer-ajax.html b/polymer-ajax.html
index 2100f81..bf3f473 100644
--- a/polymer-ajax.html
+++ b/polymer-ajax.html
@@ -39,7 +39,7 @@
 <link rel="import" href="../polymer/polymer.html">
 <link rel="import" href="polymer-xhr.html">
 
-<polymer-element name="polymer-ajax" attributes="url handleAs auto params response method headers contentType">
+<polymer-element name="polymer-ajax" attributes="url handleAs auto params response method headers body contentType">
   <script>
     Polymer('polymer-ajax', {
       /**